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Finding the Fourth Proportional to 522.15, 783.36 and 248.55

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Solution

The fourth proportional to 522.15, 783.36 and 248.55 is: 372.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    522.15 : 783.36 = 248.55 : x
  2. Step 2: Convert to fraction form
    522.15/783.36 = 248.55/x
  3. Step 3: Cross multiply
    522.15x = 783.36 × 248.55
  4. Step 4: Simplify right side
    522.15x = 194,704.13
  5. Step 5: Solve for x
    x = 194,704.13/522.15
  6. Step 6: Final answer
    x = 372.89

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